Graphical user interface for 3-dimensional view of a data collection based on an attribute of the data

ABSTRACT

A three-dimensional (3D) view of a data collection based on an attribute is disclosed. A timeline is provided for displaying files and folders. The timeline may include a focal group that displays detailed information about its contents to the user. Remaining items on the timeline are displayed in less detail and may be positioned to appear further away from the user. A histogram may be provided as part of the view to allow the user to more easily navigate the timeline to find a desired file or folder.

FIELD OF THE INVENTION

The invention relates generally to computer generated graphical userinterfaces. More specifically, the invention provides systems andmethods for enabling a user to more efficiently view, find and select agroup of objects in a graphical user interface.

BACKGROUND OF THE INVENTION

Current computer systems use graphical user interfaces (GUIs) to allowusers to effectively utilize the computer system without having to learna complex command language. An innovation of the GUI is the ability toallow users to visually organize files, folders and other objects moreeasily through the use of file manager programs such as Windows®Explorer. As used herein, the term file manager refers to any computerprogram or aspect of a computer program that is used to organize anddisplay files or representations thereof.

Recent innovations in visual technologies such as the widespreadavailability of digital cameras have made the graphical capabilities ofan operating system more important than ever before. Digital photographimages are often stored on the hard drives of personal computers ratherthan on film or photographic paper. Many consumers prefer takingphotographs with digital cameras because it is not necessary to developa roll of film in order to view the photographs. Rather, thephotographic images need only be downloaded from the camera onto apersonal computer hard disk where they are stored in some picture fileformat (e.g. .jpg, .tif, .gif, and the like) and can be viewed andmanipulated through the GUI using various application programs thateither come preinstalled on the operating system or are value-addedsoftware products (e.g., DIGITAL IMAGE PRO, by Microsoft Corporation ofRedmond, Wash.) that a user installs on top of the operating system(hereinafter OS).

As hard disk space becomes less expensive, users are able to storeincreasing numbers of photographic images (and other types of computerimage files) on the hard drive of their computers. Because of theincreased number of images, it has become more difficult for users tomanage and organize the graphics files that contain the images. Forexample, in a folder with hundreds of picture files it can be difficultto find a particular image file. This is especially the case where thefilename is not indicative of the contents of the picture file.

One way that users attempt to organize their picture files is byrenaming them in such as way as to indicate the contents of the imagecontained in them. This method has certain drawbacks. First, where auser has hundreds or even thousands of photographs, he or she must takethe time to rename each and every file to describe the contents of thepicture or photograph it contains. This renaming process involvesviewing each file to understand its contents and then typing a new namefor the file. For hundreds or thousands of pictures, this method isimpractical because it could take hours or even days.

A technique that has been employed in the prior art to enable users tomore easily navigate, organize and view picture files is the use of a“thumbnail” view, illustrated in FIG. 2. A thumbnail typically refers toa representation of the contents of a file encapsulated in an icon orother image of a size smaller than the original image size that isdisplayed in a file listing environment. Although the use of thumbnailsprovides the user with a visual indication of the contents of each file,in a folder that contains many files, it may still be difficult tolocate a desired file.

Other techniques have been used to more effectively allow the user toorganize, locate and access picture files in a folder. For example, someknown file managers allow the user to designate an ordering propertythat allows them to place the items in a file or folder in someparticular sorted order, illustrated in FIG. 3. For example, a usercould configure the file manager to sort the files in a folder bydate/time so that they are listed in chronological order. The user couldalso configure the file manager to sort the files in alphabetical orderby file name or file type. When the user configures the file manager isthis way, the entire content of the folder are ordered in atwo-dimensional array based on the selected sorting criterion.

Although these techniques are useful in organizing smaller grouping offiles and folders, as the number of files increases, these techniquesbecome less and less effective. Thus, there is a need for an improvedway to organize and display files that overcomes these and otherlimitations found in the prior art.

BRIEF SUMMARY OF THE INVENTION

The following presents a simplified summary of the invention in order toprovide a basic understanding of some aspects of the invention. Thissummary is not an extensive overview of the invention. It is notintended to identify key or critical elements of the invention or todelineate the scope of the invention. The following summary merelypresents some concepts of the invention in a simplified form as aprelude to the more detailed description provided below.

To overcome limitations in the prior art described above, and toovercome other limitations that will be apparent upon reading andunderstanding the present specification, aspects of the presentinvention are directed to a computer-implemented method for displayingitems on a GUI.

According to an aspect of the present invention, the items are firstplaced in some logical order using an attribute shared by each of theitems. The items are then divided into groups based on an interval thatis either selected by the user or determined by the system based on somealgorithm. One of the groups is designated as a focal group, and isdisplayed at a primary point of focus in the GUI. The remaining groupsare displayed on either side of the focal group based on their ordering.

Another aspect of the invention provides for the items to be displayedin a three-dimensional appearing graphical environment such that theremaining groups appear to be less prominent to the user than the focalgroup.

BRIEF DESCRIPTION OF THE DRAWINGS

A more complete understanding of the present invention and theadvantages thereof may be acquired by referring to the followingdescription in consideration of the accompanying drawings, in which likereference numbers indicate like features, and wherein:

FIG. 1 illustrates a schematic diagram of an exemplary general-purposecomputing environment that may be used to implement various aspects ofthe present invention.

FIG. 2 illustrates prior art file management program that allows athumbnail view of files.

FIG. 3 illustrates a prior art file management program that allows theuser to specify an ordering property for the contents of the active filefolder.

FIG. 4 illustrates an illustrative embodiment of the present invention.

FIG. 5 illustrates a top-level schematic of various aspects of thepresent invention according to an illustrative embodiment.

FIG. 6 illustrates another schematic showing a top view of anillustrative embodiment of the present invention.

FIG. 7 illustrates a close up screenshot of a focal group with a viewaccording to an illustrative embodiment of the present invention.

FIGS. 8 a and 8 b illustrate the handling of large and small focalgroups according to an illustrative embodiment of the present invention.

FIG. 9 illustrates a chart with calculations that may be used inpracticing aspects the present invention according to an illustrativeembodiment.

FIGS. 10 a, 10 b and 10 c illustrate a focal group transition accordingto an illustrative embodiment of the present invention.

FIG. 11 a focal group situated near one end of a timeline according toan illustrative embodiment of the present invention.

FIGS. 12 a and 12 b illustrate calling out a non-focal group withoutchanging the focal group according to an illustrative embodiment of thepresent invention.

FIG. 13 illustrates a view of a histogram according to an illustrativeembodiment of the present invention.

FIG. 14 illustrates a partial view of the histogram in FIG. 13 accordingto an illustrative embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

In the following description of the various embodiments, reference ismade to the accompanying drawings, which form a part hereof, and inwhich is shown by way of illustration various embodiments in which theinvention may be practiced. It is to be understood that otherembodiments may be utilized and structural and functional modificationsmay be made without departing from the scope of the present invention.

The present invention provides methods and systems that allow computerusers to more easily organize, find and access files. By providing agraphical user interface that utilizes an organizing principle that issimple for users to understand and at the same time giving a rich visualexperience, the invention improves significantly on known filemanagement techniques.

Illustrative Operating Environment

FIG. 1 illustrates an example of a suitable computing system environment100 in which one or more aspects of the invention may be implemented.The computing system environment 100 is only one example of a suitablecomputing environment and is not intended to suggest any limitation asto the scope of use or functionality of the invention. Neither shouldthe computing environment 100 be interpreted as having any dependency orrequirement relating to any one or combination of components illustratedin the exemplary operating environment 100.

The invention is operational with numerous other general purpose orspecial purpose computing system environments or configurations.Examples of well known computing systems, environments, and/orconfigurations that may be suitable for use with the invention include,but are not limited to, personal computers, server computers, hand-heldor laptop devices, multiprocessor systems, microprocessor-based systems,set top boxes, programmable consumer electronics, network PCs,minicomputers, mainframe computers, distributed computing environmentsthat include any of the above systems or devices, and the like.

The invention may be described in the general context ofcomputer-executable instructions, such as program modules, beingexecuted by a computer. Generally, program modules include routines,programs, objects, components, data structures, etc. that performparticular tasks or implement particular abstract data types. Theinvention may also be practiced in distributed computing environmentswhere tasks are performed by remote processing devices that are linkedthrough a communications network. In a distributed computingenvironment, program modules may be located in both local and remotecomputer storage media including memory storage devices.

With reference to FIG. 1, an illustrative system for implementing theinvention includes a general purpose computing device in the form of acomputer 110. Components of computer 110 may include, but are notlimited to, a processing unit 120, a system memory 130, and a system bus121 that couples various system components including the system memoryto the processing unit 120. The system bus 121 may be any of severaltypes of bus structures including a memory bus or memory controller, aperipheral bus, and a local bus using any of a variety of busarchitectures. By way of example, and not limitation, such architecturesinclude Industry Standard Architecture (ISA) bus, Micro ChannelArchitecture (MCA) bus, Enhanced ISA (EISA) bus, Video ElectronicsStandards Association (VESA) local bus, and Peripheral ComponentInterconnect (PCI) bus also known as Mezzanine bus.

Computer 10 typically includes a variety of computer readable media.Computer readable media can be any available media that can be accessedby computer 110 and includes both volatile and nonvolatile media,removable and non-removable media. By way of example, and notlimitation, computer readable media may comprise computer storage mediaand communication media. Computer storage media includes both volatileand nonvolatile, removable and non-removable media implemented in anymethod or technology for storage of information such as computerreadable instructions, data structures, program modules or other data.Computer storage media includes, but is not limited to, RAM, ROM,EEPROM, flash memory or other memory technology, CD-ROM, digitalversatile disks (DVD) or other optical disk storage, magnetic cassettes,magnetic tape, magnetic disk storage or other magnetic storage devices,or any other medium which can be used to store the desired informationand which can accessed by computer 110. Communication media typicallyembodies computer readable instructions, data structures, programmodules or other data in a modulated data signal such as a carrier waveor other transport mechanism and includes any information deliverymedia. The term “modulated data signal” means a signal that has one ormore of its characteristics set or changed in such a manner as toencode, information in the signal. By way of example, and notlimitation, communication media includes wired media such as a wirednetwork or direct-wired connection, and wireless media such as acoustic,RF, infrared and other wireless media. Combinations of the any of theabove should also be included within the scope of computer readablemedia.

The system memory 130 includes computer storage media in the form ofvolatile and/or nonvolatile memory such as read only memory (ROM) 131and random access memory (RAM) 132. A basic input/output system 133(BIOS), containing the basic routines that help to transfer informationbetween elements within computer 110, such as during start-up, istypically stored in ROM 131. RAM 132 typically contains data and/orprogram modules that are immediately accessible to and/or presentlybeing operated on by processing unit 120. By way of example, and notlimitation, FIG. 1 illustrates operating system 134, applicationprograms 135, other program modules 136, and program data 137.

The computer 110 may also include other removable/non-removable,volatile/nonvolatile computer storage media. By way of example only,FIG. 1 illustrates a hard disk drive 141 that reads from or writes tonon-removable, nonvolatile magnetic media, a magnetic disk drive 151that reads from or writes to a removable, nonvolatile magnetic disk 152,and an optical disk drive 155 that reads from or writes to a removable,nonvolatile optical disk 156 such as a CD ROM or other optical media.Other removable/non-removable, volatile/nonvolatile computer storagemedia that can be used in the exemplary operating environment include,but are not limited to, magnetic tape cassettes, flash memory cards,digital versatile disks, digital video tape, solid state RAM, solidstate ROM, and the like. The hard disk drive 141 is typically connectedto the system bus 121 through an non-removable memory interface such asinterface 140, and magnetic disk drive 151 and optical disk drive 155are typically connected to the system bus 121 by a removable memoryinterface, such as interface 150.

The drives and their associated computer storage media discussed aboveand illustrated in FIG. 1, provide storage of computer readableinstructions, data structures, program modules and other data for thecomputer 110. In FIG. 1, for example, hard disk drive 141 is illustratedas storing operating system 144, application programs 145, other programmodules 146, and program data 147. Note that these components can eitherbe the same as or different from operating system 134, applicationprograms 135, other program modules 136, and program data 137. Operatingsystem 144, application programs 145, other program modules 146, andprogram data 147 are given different numbers here to illustrate that, ata minimum, they are different copies. A user may enter commands andinformation into the computer 110 through input devices such as akeyboard 162 and pointing device 161, commonly referred to as a mouse,trackball or touch pad. Other input devices (not shown) may include amicrophone, joystick, game pad, satellite dish, scanner, or the like.These and other input devices are often connected to the processing unit120 through a user input interface 160 that is coupled to the systembus, but may be connected by other interface and bus structures, such asa parallel port, game port or a universal serial bus (USB). A monitor191 or other type of display device is also connected to the system bus121 via an interface, such as a video interface 190. Computer 110 mayalso include a digitizer 192 for use in conjunction with monitor 191 toallow a user to provide input using a stylus input device 193. Inaddition to the monitor, computers may also include other peripheraloutput devices such as speakers 197 and printer 196, which may beconnected through an output peripheral interface 195.

The computer 110 may operate in a networked environment using logicalconnections to one or more remote computers, such as a remote computer180. The remote computer 180 may be a personal computer, a server, arouter, a network PC, a peer device or other common network node, andtypically includes many or all of the elements described above relativeto the computer 110, although only a memory storage device 181 has beenillustrated in FIG. 1. The logical connections depicted in FIG. 1include a local area network (LAN) 171 and a wide area network (WAN)173, but may also include other networks. Such networking environmentsare commonplace in offices, enterprise-wide computer networks, intranetsand the Internet.

When used in a LAN networking environment, the computer 110 is connectedto the LAN 171 through a network interface or adapter 170. When used ina WAN networking environment, the computer 110 typically includes amodem 172 or other means for establishing communications over the WAN173, such as the Internet. The modem 172, which may be internal orexternal, may be connected to the system bus 121 via the user inputinterface 160, or other appropriate mechanism. In a networkedenvironment, program modules depicted relative to the computer 110, orportions thereof, may be stored in the remote memory storage device. Byway of example, and not limitation, FIG. 1 illustrates remoteapplication programs 185 as residing on memory device 181. It will beappreciated that the network connections shown are exemplary and othermeans of establishing a communications link between the computers may beused.

Description of Illustrative Embodiments

Generally, all items stored in an operating system have certainproperties (e.g. a time attribute) ascribed to them. The term “item” isherein defined as a visual representation of a file, folder, virtualfolder, or any other data object that may be stored in an operatingsystem and/or file system, for example, icons, thumbnails, and the like.The items in the file system and/or operating system may be stored onany desirable storage location on computer 110. For example, the itemsmay be stored on hard drive 141, or on removable non-volatile magneticdisk 152, or on optical disk 156, or even possibly on remote computer180 accessed over local area network 171 or wide area network 173.Attributes or properties of items include attributes or properties ofthe files, folders, or virtual folders, etc., that they represent andmay further include aspects of the visual representation itself. Forexample, item properties may include, but are not limited to, name, filesize, date of creation, modified date, author, title, read-only,archived, hidden, personal, type, and the like. Any item property may beused as an ordering attribute according to various aspects of thepresent invention. As used herein, the term “ordering attribute” refersto the attribute around which data is primarily sorted or organized at agiven time. For example, a user may wish to group items by item type, orauthor, or some other attribute. In one embodiment of the presentinvention, the ordering attribute may be based on time, thus arrangingthe items chronologically, e.g., by using a date of creation or date ofedit attribute as the ordering attribute. Items may be grouped inchronological order in a logical timeline in such a way as to allow auser to easily navigate and locate items. The items may then bepresented to the user in a way that reflects this timeline. Such apresentation to the user is herein referred to herein as a “dynamictimeline view.” An illustrative embodiment of a dynamic timeline view isshown in FIG. 4. It will be appreciated by those of skill in the artthat other attributes may be used as the ordering attribute to sort andpresent data according to various aspects of the invention, and that adynamic timeline view is merely an illustrative example for descriptivepurposes.

A dynamic timeline view allows a user to view a set of items arrangedchronologically and presented in a GUI environment. The GUI may takemany forms. In one embodiment, three dimensional (3D) graphicstechnology may be used to provide the dynamic timeline view in a 3Denvironment. The 3D environment may be implemented utilizing graphicstechnology such as DirectX®, Direct3D®, OpenGL®, GDI, a mediaintegration layer, or some other presentation platform as is known inthe art. In some embodiments, 3D objects (which contain 3D properties)may be utilized to provide the 3D effect, while in other embodiments,graphics tools could be used to produce icons in a two dimensional (2D)environment that appear 3D but do not have 3D properties.

Aspects of the present invention allow a user to freely navigatedocuments, files, or other data objects in a chronological manner, andallow the user to change the point of focus to an arbitrary location ona timeline. Based on the number of items in a set on which the user isfocused (e.g., the number of photographs taken in August 2003), thesystem may adjust the dynamic timeline view in order to provide animproved browsing experience. In adjusting the dynamic timeline view, aseries of animating steps may be used to enhance the richness of theuser experience. FIG. 5 illustrates a top view schematic of a 3D dynamictimeline view interface. A timeline 500 has a start date 502 and an enddate 504. The timeline 500 may include various time intervals (e.g.,days, months, years, etc., not called out in FIG. 5). According to anaspect of the invention, the point of view of the GUI may be based on aconceptual camera 506 pointed at the time interval containing the filesor objects on which the user wishes to focus. This time range is calledthe focal point 508 or focal point interval. The focal point 508 mayrepresent a point in time or an interval of time on the timeline 500.Items that are within the time range covered by the focal point arecollectively called the focal group 509. Items in the focal group 509are typically presented to the user in greater detail than is shown foritems in other time intervals on the timeline 500. Items in other timeintervals on timeline 500 are grouped together in non-focal groups 510.Some non-focal groups 510 may be located close in time to the focalpoint 509. Referring again to FIG. 5, a first non-focal group 510 a isshown on the time line 500 in a position relatively near the focal point508. Items in this group may be shown with some detail, but possiblyless than the level of detail provided for those items in the focalgroup 509. Another non-focal group 510 b is shown that is positionedfarther away on the timeline 500 relative to the focal point 508. Itemsin non-focal groups relatively farther from the focal group 509 may beshown with very little detail, and may be smaller relative to the itemsin both those non-focal groups 510 a that are closer in time to thefocal point 508, as well as the focal group 509 itself. The smallerappearance may be produced automatically when a 3D rendering technologyis used, or may be simulated in 2D by drawing the items smaller.

Focal Group

FIG. 6 illustrates a presentation of items in a focal group and variousnon-focal groups in accordance with one or more aspects of the presentinvention. A focal group 509 may be made up of an array of focal groupicons 606 a (the numbered rectangular boxes) that represent items in thefocal group 509. These icons may be traditional icons, thumbnail icons,3D thumbnail icons, or any other GUI representation of items as is knownin the art. While fifteen focal group icons 606 a are illustrated inFIG. 6, if a sixteenth item were added to the focal group 509, it wouldbe depicted as a sixteenth icon 606 a inside of the focal group 509.Icons 606 a in the focal group 509 may be presented as folders or assingle items.

If an icon is a folder, double clicking on the folder will open thefolder in a new dynamic timeline view (or other ordered view accordingto the present invention) to show the items stored in it. It can beappreciated by one of skill in the art that in addition to folders,items may be stored in other logical groupings such as virtual foldersor stacks. If an icon 606 a in the focal group 509 represents a file,double-clicking the file will cause the system to attempt to open thefile.

The GUI according to the present invention presents the icons 606 anumbered 1-15 representing items in the focal group 509 to appear closerto the user than items not in the focal group, as is illustrated in FIG.6. Above the focal group may be a focal group header 602 a that providesinformation regarding the contents of the focal group. In oneembodiment, the focal group header 602 a may have a label 604 a and maybe the width of the largest row in the focal group 509. In anotherembodiment of the present invention, the focal group header 602 a may besmaller or larger than the width of the largest or in the focal group509.

The label 604 a located in the focal group header 602 a may depend onthe ordering principle. The label 604 a may include the starting pointfor the focal group interval range on the left side and the end pointfor the focal group interval range on the right. For example, if theordering attribute is time and there are files in the folder with atimeline 500 that extends over several years, then the header bar maysimply include a starting month and/or year on the left and an endingmonth and/or year on the right. Referring to FIG. 7, an embodiment of afocal group 509 is shown with a focal group header 602 a that contains abeginning year on the left side and an ending year on the right. Theselabels may indicate to the user that the content of the focal group isdated sometime between Jan. 1, 2004 and Dec. 31, 2005. If the timelinecovers only a short period of time, the focal group header 602 a maycontain a label 604 a in the form of Month₁ Day₁ on the left and Month₂Day₂ on the right. In some embodiments, the focal group header 602 awill contain only one item in the center. For example, if the orderingattribute were file type, the focal group header 602 a might contain alabel that simply says, “Excel Spreadsheets” or some other file type asis known in the art. Or, in another embodiment, if a timeline 500 has arange of more than a day but less than a week, the focal group header602 a may just contain the day of the week (e.g. “Monday”). While thelabel 604 a preferably includes a description of the ordering attributeof the items in the focal group, each focal group header 602 a mayinclude any label 604 a that describes the contents of the focal group.

As discussed above, the views provided by the GUI are similar to whatone would see if a conceptual camera moved along the files and foldersplaced in the timeline 500. In one aspect of the present invention, theconceptual camera is always positioned such that all of the items in thefocal group 509 can be seen. Thus, the conceptual camera provides for a“zooming” effect that allows the focal group 509 to always remain fullyvisible in the foreground, more prominently displayed, while thenon-focal groups recede to the background, less prominently displayed oneither side of the focal group, according to the ordering attribute. Toaid a user's navigation of the timeline, it may be preferable to limitthe amount of space that the focal group 509 can capture in a givenview. Because there may be many non-focal groups 510 present, if thefocal group 509 becomes too large, then the ability to show thenon-focal groups 510 in any detail may become compromised. Therefore, insome embodiments the focal group 509 may be limited to a predeterminedwidth, e.g., a range between fifty and seventy percent of the totalwidth of the display in which the dynamic timeline view appears. Inother aspects of the present invention, icons might be limited in sizeto fall within a predetermined icon size range. This range could bebased on pixel size or on some other criterion. For example, in anillustrative embodiment, the interface may establish a minimum icon sizeof 24 pixels by 24 pixels or a maximum icon size of 192 pixels by 192pixels on a 96 dpi (dots per inch) screen. For higher or lower dpiscreens, these minimum and maximum icon size requirements may beincreased or decreased as applicable. Thus, although there generally isnot a limitation on the number of icons that may be displayed in thefocal group, in some embodiments, in order to aid usability of the userinterface, the above-referenced icon size and screen width limitationsresult in focal groups having a maximum number of group members.

The conceptual camera 506 view discussed above also provides for azooming effect so that in a focal group 509 with fewer icons 606 a, theicons 606 a may be larger because the conceptual camera 506 zooms in. Inan alternative embodiment, where the focal group may be mobile while theconceptual camera 506 may stay fixed such that the perceived size of theicons 606 a is as large as the maximum icon size will allow. In a focalgroup 509 with a large number of icons 606 a, the icons may be smallerbecause the conceptual camera 506 zooms out in order to capture all ofthe group member's icons. The net effect of this behavior is that thesize of the focal group 509 will remain fairly stable whether there arefew or many icons 606 a to be displayed, but the size of each icon 606a, while preferably consistent within each focal group, may vary fromone focal group to the next. Referring to FIGS. 8 a and 8 b, two views800 a and 800 b are shown. In view 800 a, a focal group 809 a withsixteen icons 806 representing 16 group items demonstrates a zoomed ineffect on a focal group. In FIG. 8 b, a view 800 b is shown where theview 800 b has a second focal group 809 b that has sixty-four icons 806representing 64 group items. In spite of the significant difference inthe number of icons 806 between the first focal group 809 a and thesecond focal group 809 b, the width of each of the focal groups issubstantially the same. This effect is accomplished by utilizing azooming out camera effect. The focal group headers 802 a and 802 blocated in FIGS. 8 a and 8 b may have a fixed width as well.

In some aspects of the present invention, there may be a categorizerthat creates and manages both the focal group and the various non-focalgroups. Thus, the categorizer may be used to divide the folder itemsinto the various groups as indicated by the ordering interval of theordering attribute. The ordering interval, also called a groupinginterval, refers to the measurement that is used to divide the dataobjects displayed in the GUI into groups. For example, in a view that isa timeline, the ordering interval may be years, months, weeks, days,hours, or some other measurement of time. In an alternative embodiment,the ordering interval could In an embodiment of the present inventionthe user may select the ordering interval. Alternatively, the system mayuse a fixed or default ordering interval, or the system may determine anoptimal interval to use based on various group size criteria. Forexample, in a dynamic timeline view, the interval may be “Months” for astacked view and “Days” for a single item view. In yet anotherembodiment, a set-based variable may be used in determining the orderinginterval. An algorithm that runs a portion of the data set to determinea smart set of groupings. This smart set of groupings is a set-basedvariable. For example, in a dynamic timeline view an algorithm mayanalyze the data and establish some groups according to months, othergroups according to years, and other groups according to days based onthe time attribute of the data set. In another example, time could beused as a ordering attribute, but the ordering interval could be basedupon the number of items in each group.

In yet another embodiment, the categorizer may use an endpoint-basedalgorithm to determine the ordering interval. FIG. 9 depicts a chartthat may be used by an algorithm of an illustrative embodiment todetermine an ordering interval and label format based on a timelineendpoint(s). Column 902 indicates the range of time that the timelinebeing analyzed covers. Column 904 provides the interval that thecategorizer chooses if the timeline 500 falls into the range specifiedin column 902. Column 906 indicates the label that may be applied to thefocal grouper header based on the selected interval. While the exampleprovided herein uses time as the ordering attribute, one of skill in theart can appreciate that a similar algorithm may be applied for otherordering attributes such as file type, file name, file owner, documentauthor, or any other file attribute that may be ordered. By way ofillustrative example, six rows are presented beneath columns 902, 904,and 906. In the first row 908, where the timeline covers less than onehour, the categorizer may set the order interval at quarter hours, andthe label format to show the time range as a first hour/minutecombination and a second hour/minute combination. In the second row 910,where the timeline covers greater than one hour, but less thantwenty-four hours, the categorizer may set the interval to hours and thelabel format to a similar hour/minute combination as found in the firstrow 910. The third row 912 may be applied when the timeline 500 coversgreater than twenty-four hours but less than or equal to seven days. Inthis instance, the categorizer may set the interval to days and thelabel format may be a single day of the week rather than some range oftime and may be placed in the center of focal group heading. Rows 914,916, and 918 each provide for a longer timeline, respectively, anddescribe the intervals and labels that should be applied for each. Oncethe categorizer has divided the groups (e.g. chosen the proper orderinginterval), the groups may then be displayed to the user.

There may be situations were a large number of items are eligible to beincluded in a group. For example, if a timeline 500 covers a span ofyears, and there are hundreds of items in each year, it may not bepossible to display each of the items in the group if the focal groupmaximum width and minimum icon size limitations are in use. In such acase, the categorizer may split the timeline into more granular groups,or the categorizer may split a group that is otherwise too large intotwo or more subgroups. In these instances, the focal group header may beupdated accordingly. For example, if the timeline 500 is three yearslong, and the algorithm shown in FIG. 9 is applied to that timelineresulting in a group with 200 items, the number of items in the groupmay be too large to be displayed on the user interface at one time. Thecategorizer may then split any oversized group into two or more subgroups and change the focal group header label accordingly. Referringback to FIG. 9, a timeline 500 that is three years long would apply row918. Thus, the label that is placed in the focal group header is of theformat “Year₁-Year₂”. If the number of items in the focal group 509 istoo large to be displayed at one time, the categorizer may split thefocal group 509. The label may be changed to reflect this split. In oneembodiment, the respective labels for each subgroup may be“Year₁-Year₂—Part 1” and “Year₁-Year₂—Part 2”. As more sub-groups arecreated, additional labels may be created accordingly.

In other aspects of the invention, the focal group may be limited insize so that the non-focal groups are visible to the user on either sideof the focal group. As discussed above, a minimum icon size may also beprescribed so that users are able to decipher the contents of the focalgroup icons 606 a. Icons within the focal group 509 may be orderedaccording to some ordering criterion. In one embodiment, the items inthe focal group will flow from left to right and top to bottom accordingto the ordering attribute used to create the view. In other embodiments,the icons 606 a may flow from right to left and/or bottom to top toaccommodate other cultures (e.g. for languages that are read from rightto left rather than left to right).

In another aspect of the present invention, the categorizer maydetermine the number of icons 606 a that are in the focal group 509 (orin some cases in each focal group subgroup). The focal group 509 mayhave a layout that is determined by a mathematical calculation. Forexample, in one embodiment, the row width (i.e. the number of icons tobe placed in each row) of any focal group 509 (or a sub-group of thefocal group 509) may be calculated as CEILING(SQRT(N)) where N is thenumber of icons 606 to be displayed, i.e., the number of focal group orfocal subgroup members. In other embodiments, the row width may becalculated as FLOOR(SQRT(N)) where N is the number of icons 606 to bedisplayed. In still other embodiments, the layout may be determined bysome other method of graphic layout design as is known in the art.

Focal Group Animation

According to another aspect of the invention, animation may be used totransition from one focal group to another. The animation describedherein may be implemented using various technologies that are known inthe art. For example, DirectX® and/or Direct3D® technology can be usedto provide 3D animation described herein. Other 3D graphics technologiesknown in the art may also or alternatively be used. These animationroutines may reside as part of the operating system 134, 144, or theymay reside independently of the operating system in other programmodules 136, 146. They may be stored on hard disk drive 141, nonvolatilemagnetic disk 152, optical disk 156 or even on remote computer 181accessible over local area network 171 or wide area network 173.

The steps for changing from one focal group to another focal group aredemonstrated in FIG. 10. A change in focal group is initiated by a userimplementing an actuating method such as clicking on a non-focal groupon the timeline or a new position in the histogram (discussed below).When the user selects a new focal group, the system may initiate aseries of steps to animate the process of changing focus from one groupof icons to another.

Referring to FIG. 10 a, a conceptual diagram presents various aspects ofthe present invention. A conceptual camera 1001 is focused on a currentfocal group 1000. Various non-focal groups 1002 are situated behind thecurrent focal group 1000, with each being partially obscured by thefocal group in front of it. A new focal group 1004 may be called out bya user. When the user selects new focal group 1004, the conceptualcamera 1001 moves from the current focal group 1000 past various othernon-focal groups 1002 to the new focal group 1004. As the conceptualcamera 1001 is moving, the GUI is updated to reflect the view from theconceptual camera's current position, thus providing an animationsequence as the conceptual camera moves. Referring now to FIG. 11 b,once the conceptual camera 1001 is positioned in front of the new focalgroup 1004, the timeline may bend from its old position 1006 to a newposition 1008. Turning now to FIG. 10 c, once the timeline has completedrepositioning, the conceptual camera 1001 zooms in or out so that theitems in the focal group are fully visible and at the forefront of theGUI display.

Focal Group Placement

In the embodiments of the present invention so far described, the focalgroup has generally been placed in the center of the view. In yetanother aspect of the present invention, the focal point may be shiftedfrom the center of the view to one side of the view. Generally, thefocal group will be placed so that the maximum number of icons (bothfocal group icons and non-focal group icons) will be visible to theuser. The focal group may be placed in the center of the dynamictimeline view when certain conditions are met. For example, the focalgroup may be in the center of the view if the number of icons on eachside of the focal group is the same or at least meets a minimumthreshold, e.g., if the number of icons on both sides of the focal groupare of such an amount that they extend beyond the visible area in thedynamic timeline view. In yet another embodiment, the focal group may becentered when all of the icons on either side of the focal group are ofan amount that can be displayed such that they can all be seen withinthe visible area in the view.

FIG. 11 illustrates a scenario where, according to aspects of thepresent invention, the focal group might not remain centered in thedynamic timeline view. A focal point 1100 is located on a timeline 1101.The timeline 1101 has a starting point 1108 and an ending point 1111.The timeline 1101 also has a visible area 1106. The visible area 1106 isthe area that will be displayed to the user in enough detail for theuser to discern the timeline content. The timeline 1101 is furtherdivided into a Side A 1102 and a Side B 1104 on the left and right sidesof the focal point 1100, respectively. In this example, the number oficons on Side A is greater than the number of icons on Side B and theseicons extend beyond the start of the visible area 1110. Thus, certainicons on Side A are not visible to the user. However, side B containsfewer icons, and as a result, the end of the timeline 1112 falls withinthe visible area. In order to provide the user with a view of thegreatest total number of icons, the focal point may shift to the user'sright in the view. The actual ordering interval captured by the focalpoint does not change. This shifting procedure changes only the locationof the focal point 1100 in the dynamic timeline view.

Non-Focal Groups

According to other aspects of the present invention, when a group is notat the focal point (i.e. is not the focal group), it is a non-focalgroup. Generally, a non-focal group will have certain propertiesassociated with it. For example, in an embodiment where the view ispresented with a 3D effect, the non-focal groups will be presented insuch a way as to highlight the three dimensions.

Referring back to FIG. 6, the focal group 509 may be placed in the frontand center of the GUI view, and may appear to be some distance from theuser. Non-focal groups 610 a, 610 b, 610 c, and 610 d may be positionedat some horizontal and spatial (in 3D implementations) offset from thefocal group and also appear to be less prominent than the focal group.For example, they may be positioned behind the focal group (i.e.somewhat farther in the distance). In order to better simulate a 3Deffect, the items in the focal group 509 may cast simulated shadows onthe non-focal groups immediately adjacent. Likewise, each non-focalgroup may cast simulated shadows on elements situated behind it. In oneembodiment of the present invention, all of the groups (non-focal andfocal) may be aligned vertically. In other words, each of the groupsappears to be placed at the same vertical position on the display,regardless of the conceptual camera's present perspective. In otherembodiments of the present invention, the non-focal groups may be offsetvertically from the focal group and the other non-focal groups. Incertain embodiments the non-focal groups may be in focus, allowing theuser to more easily select a new focal group from among the non-focalgroups in the view. However, as the non-focal groups are set farther andfarther away from the focal group 509, the non-focal groups may becomeblurred, fogged or transparent. If the number of intervals between anon-focal group and the focal group becomes large, the non-focal groupmight not be displayed, or it may simply become too small for the userto see on the screen.

Referring again to FIG. 6, four non-focal groups may be observed—two oneach side of focal group 509. It may be observed that the top portion ofeach group is in alignment with the others. Each non-focal group isdivided into columns, and may be sorted by the ordering attributespecified for the view. There are two non-focal groups 610 a and 610 bthat are located one interval from the focal group 509. In an embodimentin which the view is a dynamic timeline view, these non-focal groupscontain icons that are the closest in time to the focal group 509.Columns that are further in time from the focal group 509 are placedfurther away from the focal group both horizontally and spatially (in 3Dimplementations) so that they appear to be further away in space. Eachof the non-focal groups has a non-focal group header (608 a and 608 brespectively) that provides information of the group's contents in amanner similar to the focal group header 602 discussed above. Just asthe focal group header 602 may be the perceived width of the focalgroup, the non-focal group header may be the perceived width of thenon-focal group.

In some embodiments of the present invention, the non-focal group icons606 b (those in the non-focal groups) may be presented as partiallyobscured by those items in columns closer to the focal group 509. Eachcolumn of non-focal group icons 606 b may be partially obscured by thecolumn immediately adjacent and closer to or in the focal group 509. Forexample, column 620 is partially obscured by column 618. In otherembodiments all icons may be fully displayed.

In yet another aspect of the present invention, a non-focal group may becalled out without making it the focal group. Referring to FIGS. 12 aand 12 b, a dynamic timeline view according to aspects of the presentinvention is shown. In FIG. 12 a, the focal group 1209 is the month ofApril. The non-focal groups 1202 are partially obscured according toaspects of the present invention. If the user wishes to more closelyexamine the contents of the February non-focal group 1204 withoutchanging the focal group 1209, a mouse pointer 1202 may be moved overthe February non-focal group 1204 and left to hover. FIG. 12 bdemonstrates how after a certain period of time of mouse hover, theFebruary non-focal group 1204 may fold out from the other non-focalgroups, displaying its icons in their entirety rather than partiallyobscured as may be the norm.

Histogram

In further aspects of the present invention, a histogram may be providedto allow the user to more easily navigate and change focal groups overthe entire timeline, and not be limited to the groups in the visiblearea of the timeline. FIG. 13 illustrates a histogram 1300 according toan illustrative embodiment of the invention. The histogram may have arange associated with it based on the range of the timeline or thecontents of the present view. In an embodiment where time is theordering attribute, the range may be the minimum date to the maximumdate of the timeline. In FIG. 13, the start date 1302 is the year 1995and the end date 1304 is the year 2008. A user may select an interval toforce the GUI display to immediately jump to the selected group.

According to an aspect of the invention, the histogram may be laid outin a series of columns where there is a single column for each histograminterval. Each column may have a height associated with it, indicatingan amount of data falling within that interval. In one embodiment, aseries of bars 1306 are used to represent the number of files in theinterval represented by the column relative to the number of files inother intervals. The height of the bars 1306 may be calculated byfinding the interval with the most files and assigning itsrepresentation a height of ten bars. Based on this maximum height, eachof the other columns may be assigned a number of bars based on thefollowing equation:Num Bars=CEILING(10*[Num Files in Current Column]/[Num Files in MaxColumn])

For each view presented to the user according to aspects of the presentinvention, an interval may be chosen for the histogram 1300. Theinterval for the histogram may be selected to fill the bottom of theview with as many logical columns as possible. In some embodiments, theinterval for the histogram may be a fixed value (e.g. it may represent afixed amount of time). The interval for the histogram will notnecessarily be the same as the interval for the focal and non-focalgroups (i.e. the ordering interval).

According to aspects of the present invention an initial calculation maybe used to determine a value C that may then be used to determine theappropriate histogram interval.

This calculation may take the form of:C=[Total Range Covered by Histogram]/[# Columns that Can Fit in View]

If for example, a range of 13 years is covered by the histogram 1300,and the view can fit 100 columns, then the system may perform thefollowing calculation:C=[13 years]/[100 Columns]=0.13 Years=47 days

Referring back to FIG. 9, a chart that maps C values to histogramintervals is shown. Although the chart in FIG. 9 may also be used tocalculate ordering interval for the dynamic timeline view, it may beappreciated by one of skill in the art that the methods used tocalculate the histogram interval may differ from the methods used tocalculate the histogram interval. In this example, because the C valueis 47 days, the selected histogram interval would be months. Thus, foreach month in the time range, a bar may be placed on the histogram withits height set according to the number of files in that interval.

A user may interact with the histogram 1300 in several ways. Hovering amouse pointer over a column may cause a tool tip showing the rangecovered by that column to appear. The format of the tool tip may bebased on the histogram interval. The histogram 1300 may also be used tochange the focal group. In one embodiment, clicking on a column bringsthe represented range forward as the focal group in the view. In thecase of a dynamic timeline view, clicking a column may cause the systemto change the focal group from the current focal group (if differentfrom the newly selected focal group) to the new focal group, optionallyusing animation as described above.

Because the histogram interval is not necessarily identical to theordering interval for the dynamic timeline view, rules may be created tohandle situations where the interval of the histogram and the intervalof the view differ. In one embodiment, a three-rule system may be usedto handle changing the focal group based on a user clicking on thehistogram. First, if the interval of the histogram 1300 is equal to theinterval of the view, then clicking on a column of the histogram maychange the focal group 509 to the exact group represented by the columnin the histogram. Second, if the interval of the histogram is largerthan the interval of the view, then clicking on a column in thehistogram may cause the focal group 509 to be the first interval of theview represented by that column. Finally, if the interval of thehistogram is smaller than the interval of the view, then clicking on acolumn in the histogram may cause the focal group 509 to be the intervalthat contains the time represented by the selected column. Referring nowto FIG. 14, once the user has selected a new focal group on thehistogram, the set of intervals 1402 on the histogram that the focalgroup covers will be highlighted and labeled with the a label similar tothe focal group label.

Jog Control

Another aspect of the invention provides a jog control for scrollingthrough the intervals of the dynamic timeline view. Referring back toFIG. 13, a jog control 1308 is present. In this particular embodiment,the jog control is presented as a scrolling bar located above thehistogram 1300. However, jog control 1308 may be placed elsewhere on theinterface (e.g. above the timeline view), and may take a different shapethan shown in FIG. 13. The jog control 1308 may be dragged in a certaindirection using a mouse or some other device. When the jog control ismoved in a direction, the system responds by causing the conceptualcamera that is focused on the focal group to begin moving along thedynamic timeline view as described in the section on Focal GroupAnimation above. As the jog control is pulled further away from itsoriginal position, the conceptual camera moves away from the focal groupat a faster speed. When the conceptual camera reaches the end of thedynamic timeline view, or when the user releases the jog control 1308which causes it to return (or snap back) to its original position, theconceptual camera will stop moving, and the interval over which it islocated will become the new focal group.

Other Input Devices

Although the present invention has been described in terms of aninterface that is manipulated by a mouse or some other pointing deviceas known in the art, it can be readily appreciated that other inputdevices can be used to manipulate and control the dynamic timeline view.For example, a keyboard implementation may be provided. Pressing thePage Up key may cause the focal group to shift to the first non-focalgroup on the left, while pressing the Page Down key on the keyboard maycause the focal group to shift to the first non-focal group on theright. The End key may be used to shift the dynamic timeline view focalgroup to the oldest time interval, while pressing the Home key couldshift the dynamic timeline view to the most recent time in the view.

Further, a user may be able to manipulate and control the dynamictimeline view by rotating a scroll wheel on a mouse, keyboard, or othercomputer input device. For example, backward rotation of the scrollwheel may cause the focal group to shift to the first non-focal group onthe left (e.g., backwards in time), and forward rotation of the scrollwheel may cause the focal group to shift to the first non-focal group onthe right (e.g., ahead in time).

The displays of the dynamic timeline view shown in FIGS. 4, 6, 8 a, 8 b,12 a and 12 b are exemplary graphical presentations. A limitless numberof graphical presentations can be made. For example, any desired shapeand relative size of the icons; header, and groups may be used. Further,a whole host of different graphical presentation may be used to make thefocal group more prominent than the non-focal groups in the relativepositioning of the focal group to non-focal groups. Moreover, the focalgroups and non-focal groups may be graphically depicted by numerousdifferent techniques. Other view may be available such that the dynamictimeline may be viewed from any perspective allowed in a physicallymodeled 3D or simulated 3D environment.

While the invention has been described with respect to specific examplesincluding presently preferred modes of carrying out the invention, thoseskilled in the art will appreciate that there are numerous variationsand permutations of the above described systems and techniques. Thus,the spirit and scope of the invention should be construed broadly as setforth in the appended claims.

1. A computer-implemented method for displaying a set of items on agraphical user interface according to a common attribute of each item ofthe set, wherein the attribute can be ordered, comprising: determiningan ordering interval of the set of items; dividing the set of items intoa plurality of ordered groups based on the ordering interval and theattribute; determining a focal group from the plurality of orderedgroups; displaying the focal group at a point of primary focus of thegraphical user interface; displaying on the graphical user interfacewith less prominence than the focal group on a first side of the focalgroup, at least one group that precedes the focal group; and displayingon the graphical user interface with less prominence than the focalgroup on a second side of the focal group, at least one group thatsucceeds the focal group.
 2. The computer implemented method of claim 1,wherein the first side of the focal group is one of a left side and aright side of the focal group, and the second side of the focal group isthe other of said left side and right side.
 3. The computer implementedmethod of claim 1, wherein the first side of the focal group is one of atop side and a bottom side of the focal group, and the second side ofthe focal group is the other of said top side and said bottom side. 4.The computer implemented method of claim 1, wherein the set of itemsrepresent graphical image files.
 5. The computer implemented method ofclaim 1, wherein the attribute corresponds to when each item wascreated.
 6. The computer implemented method of claim 5, wherein theattribute corresponds to a date a picture was taken.
 7. The computerimplemented method of claim 1, wherein the objects in the graphical userinterface are rendered in 3D on a display device.
 8. The computerimplemented method of claim 1, wherein the graphical user interfacesimulates 3D in a 2D graphical environment, as displayed on a displaydevice.
 9. The computer implemented method of claim 1, furthercomprising: receiving user input selecting an item from a non-focalgroup; determining the non-focal group from which the item was selectedto be a new focal group instead of the original focal group;transitioning the graphical user interface to display the new focalgroup at the point of primary focus of the graphical user interface, todisplay, with less prominence than the new focal group, at least onegroup that precedes the new focal group, on the first side of the newfocal group, and to display, with less prominence than the new focalgroup, at least one group that succeeds the new focal group, on thesecond side of the new focal group.
 10. The computer implemented methodof claim 9, wherein the transitioning step comprises animating thegraphical user interface to move the ordered groups.
 11. The computerimplemented method of claim 1, further comprising: displaying ahistogram indicating a range within which the ordered groups fall, basedon the attribute on which the ordered groups are ordered, wherein uponreceiving user input selecting an interval on the histogram, a new focalgroup is determined based on the selected interval, and displaying thenew focal group at the point of primary focus corresponding to theselected interval.
 12. The computer implemented method of claim 11,where each interval of the histogram comprises an indicator of a numberof items falling within that interval.
 13. The computer implementedmethod of claim 1, wherein the step of displaying the focal group at apoint of primary focus of the graphical user interface comprises sizingthe focal group to consume a predetermined amount of the graphical userinterface space.
 14. The computer implemented method of claim 13,wherein the predetermine amount comprises a range of approximately fiftyto seventy percent of a width of the graphical user interface.
 15. Thecomputer implemented method of claim 13, wherein the step of displayingthe focal group at a point of primary focus of the graphical userinterface comprises sizing items of the focal group such that all theitems fit within the predetermined amount of the graphical userinterface space.
 16. The computer implemented method of claim 13 furthercomprising: determining whether all the items fit within thepredetermined amount of the graphical user interface space when eachicon has a predetermined minimum size; dividing the focal group into aplurality of sub groups and displaying a first subgroup of the pluralityof subgroups as the focal group if the icons do not fit within thepredetermined amount of the graphical user interface space.
 17. Thecomputer implemented method of claim 16, wherein the predeterminedminimum size is pixel-based.
 18. The computer implemented method ofclaim 17, wherein the predetermined minimum size comprises 24 pixels by24 pixels on a 96 dots per inch (dpi) display device, or a substantiallyequivalent size on a non-96 dpi display device.
 19. The computerimplemented method of claim 1, wherein displaying on the graphical userinterface at least one group that precedes the focal group comprisesdisplaying the at least one group that precedes the focal group toappear receding backwards from the focal group.
 20. The computerimplemented method of claim 1 further comprising displaying on thegraphical user interface a jog control which, when moved, causes theordered groups to shift correspondingly with the jog control causing thefocal group to become a new non-focal group and a non-focal group tobecome a new focal group.
 21. A computer readable medium comprisingcomputer executable instructions that cause a computer to perform amethod for displaying a set of items on a graphical user interfaceaccording to a common attribute of each item of the set, wherein theattribute can be ordered, comprising: determining an ordering intervalof the set of items; dividing the set of items into a plurality ofordered groups based on the ordering interval and the attribute;determining a focal group from the plurality of ordered groups;displaying the focal group at a point of primary focus of the graphicaluser interface; displaying on the graphical user interface with lessprominence than the focal group on a first side of the focal group, atleast one group that precedes the focal group; and displaying on thegraphical user interface with less prominence than the focal group on asecond side of the focal group, at least one group that succeeds thefocal group.
 22. The computer readable medium of claim 21, wherein thefist side of the focal group is one of a left side and a right side ofthe focal group, and the second side of the focal group is the other ofsaid left side and right side.
 23. The computer readable medium of claim21, wherein the first side of the focal group is one of a top side and abottom side of the focal group, and the second side of the focal groupis the other of said top side and said bottom side.
 24. The computerreadable medium of claim 21, wherein the set of items representgraphical image files.
 25. The computer readable medium of claim 21,wherein the attribute corresponds to when each item was created.
 26. Thecomputer readable medium of claim 25, wherein the attribute correspondsto a date a picture was taken.
 27. The computer readable medium of claim21, wherein the objects in the graphical user interface are rendered in3D on a display device.
 28. The computer readable medium of claim 21,wherein the graphical user interface simulates 3D in a 2D graphicalenvironment, as displayed on a display device.
 29. The computer readablemedium of claim 21, the method further comprising: receiving user inputselecting an item from a non-focal group; determining the non-focalgroup from which the item was selected to be a new focal group insteadof the original focal group; transitioning the graphical user interfaceto display the new focal group at the point of primary focus of thegraphical user interface, to display, with less prominence than thenew-focal group, at least one group that precedes the new focal group,on the first side of the new focal group, and to display, with lessprominence than the new focal group, at least one group that succeedsthe new focal group, on the second side of the new focal group.
 30. Thecomputer readable medium of claim 29, wherein the transitioning stepcomprises animating the graphical user interface to move the orderedgroups.
 31. The computer readable medium of claim 21, the method furthercomprising: displaying a histogram indicating a range within which theordered groups fall, based on the attribute on which the ordered groupsare ordered, wherein upon receiving user input selecting an interval onthe histogram, a new focal group is determined based on the selectedinterval, and displaying the new focal group at the point of primaryfocus corresponding to the selected interval.
 32. The computer readablemedium of claim 31, where each interval of the histogram comprises anindicator of a number of items falling within that interval.
 33. Thecomputer readable medium of claim 21, wherein the step of displaying thefocal group at a point of primary focus of the graphical user interfacecomprises sizing the focal group to consume a predetermined amount ofthe graphical user interface space.
 34. The computer readable medium ofclaim 33, wherein the predetermined amount comprises a range of fifty toseventy percent of a width of the graphical user interface.
 35. Thecomputer readable medium of claim 33, wherein the step of displaying thefocal group at a point of primary focus of the graphical user interfacecomprises sizing items of the focal group such that all the items fitwithin the predetermined amount of the graphical user interface space.36. The computer readable medium of claim 33, the method furthercomprising: determining whether all the items fit within thepredetermined amount of the graphical user interface space when eachicon has a predetermined minimum size; dividing the focal group into aplurality of sub groups and displaying a first subgroup of the pluralityof subgroups as the focal group if the icons do not fit within thepredetermined amount of the graphical user interface space.
 37. Thecomputer readable medium of claim 36, wherein the predetermined minimumsize is pixel-based.
 38. The computer readable medium of claim 37,wherein the predetermined minimum size comprises 24 pixels by 24 pixelson a 96 dots per inch (dpi) display device, or a substantiallyequivalent size on a non-96 dpi display device.
 39. The computerreadable medium of claim 31, wherein displaying on the graphical userinterface at least one group that precedes the focal group comprisesdisplaying the at least one group that precedes the focal group toappear receding backwards from the focal group.
 40. The computerreadable medium of claim 21 further comprising displaying on thegraphical user interface a jog control which, when moved, causes theordered groups to shift correspondingly with the jog control causing thefocal group to become a new non-focal group and a non-focal group tobecome a new focal group.
 41. A computer-generated user interface fordisplaying items comprising: a first set of items comprising a focalgroup; a plurality of sets of items related to the first set of itemscomprising a plurality of non-focal groups positioned in such a way asto appear less prominent than the focal group; wherein the focal groupand the plurality of non-focal groups are positioned according to anordering attribute that exists in the focal group and the non-focalgroups.
 42. The computer generated user interface of claim 41 furthercomprising: a jog control which when moved to a side causes the focalgroup to become a non-focal group and a non-focal group to become afocal group.
 43. A method for displaying a plurality of items on agraphical user interface, comprising: organizing the plurality of itemsinto groups of two-dimensional arrays based on time; and displaying atleast a plurality of the groups on the graphical user interface withdiffering prominence based on a selected group.